上期文章讲到JsonPath工具类封装，遗留了一个坑，就是关于工具类的单元测试，由于中午得空，所以使用单元测试框架Spock写了一点点单元测试用例，分享出来，供大家参考。

使用Groovy语言，spock测试框架，如需了解请参考文章：
Maven和Gradle中配置单元测试框架Spock
Groovy单元测试框架spock基础功能Demo
Groovy单元测试框架spock数据驱动Demo
人生苦短？试试Groovy进行单元测试
Spock 2.0 M1版本初探
单元测试框架spock和Mockito应用
中间用到了Groovy的文本块，有兴趣的可以看看Java文本块。

单元测试用例

package com.FunTester.spock.utils_test

import com.alibaba.fastjson.JSON
import com.fun.utils.JsonUtil
import org.slf4j.Logger
import spock.lang.Shared
import spock.lang.Specification

import java.util.concurrent.atomic.AtomicInteger

import static com.fun.frame.SourceCode.getLogger

public class JsonUtilTest extends Specification {

    @Shared
    Logger logger = getLogger(this.getClass().getName())

    @Shared
    AtomicInteger times = new AtomicInteger(1)

    @Shared
    JsonUtil json = JsonUtil.getInstance(JSON.parseObject("{" +
            "    "store": {" +
            "        "book": [" +
            "            {" +
            "                "category": "reference"," +
            "                "author": "Nigel Rees"," +
            "                "title": "Sayings of the Century"," +
            "                "page": "D"," +
            "                "pages": ["S","X","G"]," +
            "                "price": 8.95" +
            "            }," +
            "            {" +
            "                "category": "fiction"," +
            "                "author": "Evelyn Waugh"," +
            "                "title": "Sword of Honour"," +
            "                "page": "A"," +
            "                "pages": ["A","B"]," +
            "                "price": 12.99" +
            "            }," +
            "            {" +
            "                "category": "fiction"," +
            "                "author": "Herman Melville"," +
            "                "title": "Moby Dick"," +
            "                "isbn": "0-553-21311-3"," +
            "                "page": "B"," +
            "                "pages": ["E","F"]," +
            "                "price": 8.99" +
            "            }," +
            "            {" +
            "                "category": "fiction"," +
            "                "author": "J. R. R. Tolkien"," +
            "                "title": "The Lord of the Rings"," +
            "                "isbn": "0-395-19395-8"," +
            "                "page": "C"," +
            "                "pages": ["C","D"]," +
            "                "price": 22.99" +
            "            }" +
            "        ]," +
            "        "bicycle": {" +
            "            "color": "red"," +
            "            "price": 19.95" +
            "        }" +
            "    }," +
            "    "expensive": 10," +
            "    "ss": [32,32,4,23]" +
            "}"))

    def setupSpec() {
        logger.info "测试类开始! ${logger.getName()}"
    }

    def setup() {
        logger.info "第 ${times.get()} 次测试结束!"
    }

    def cleanup() {
        logger.info "第 ${times.getAndIncrement()} 次测试结束!"
    }

    def cleanupSpec() {
        logger.info "测试类结束! ${logger.getName()}"
    }

    def "验证取值效果"() {

        expect:
        value as String == json.getString(path)

        where:
        value                           | path
        10                              | "$.expensive"
        "Sword of Honour"               | "$.store.book[1].title"
        "0-395-19395-8"                 | "$.store.book[3].isbn"
        19.95                           | "$.store.bicycle.price"
        "[19.95,8.95,12.99,8.99,22.99]" | "$..price"
        "[]"                            | "$..fdsss"
        ""                              | "$.fdsss"

    }

    def "验证数组相关功能"() {
        expect:
        value as String == json.getString(path)

        where:
        value           | path
        """["S","X"]""" | "$..book[0].pages[0,1]"
        """["G"]"""     | "$..book[0].pages[-1]"
        """["C"]"""     | "$..book[?(@.price == 22.99)].page"
        """["C"]"""     | "$..book[?(@.price in [22.99])].page"
        """["D"]"""     | "$..book[?(@.price nin [22.99,8.99,12.99])].page"
        """["C"]"""     | "$..book[?(@.title =~ /.*Lord.*/)].page"
        """["D","C"]""" | "$..book[?(@.title =~ /.*the.*/)].page"
        """["B","C"]""" | "$..book[?(@.pages subsetof ['D','C','E','F'])].page"
    }

    def "验证处理数组的函数"() {
        expect:
        value == json.getDouble(path)

        where:
        value   | path
        91      | "$.ss.sum()"
        4       | "$.ss.min()"
        32      | "$.ss.max()"
        22.75   | "$.ss.avg()"
        11.4318 | "$.ss.stddev()"
        4       | "$.ss.length()"

    }

}

最后一个用例里面，我特意留了一个「BUG」，就是在计算标准差的时候，我省去了后面的几位数字，导致一个用例失败。

控制台输出

这里只放了最后一个方法的输出，其他的都是成功的，所以就省去了。

INFO-> 第 16 次测试结束!
INFO-> 第 16 次测试结束!
INFO-> 第 17 次测试结束!
INFO-> 第 17 次测试结束!
INFO-> 第 18 次测试结束!
INFO-> 第 18 次测试结束!
INFO-> 第 19 次测试结束!
INFO-> 第 19 次测试结束!
INFO-> 第 20 次测试结束!
INFO-> 第 20 次测试结束!
INFO-> 第 21 次测试结束!
INFO-> 第 21 次测试结束!

Condition not satisfied:

value == json.getDouble(path)
|     |  |    |         |
|     |  |    |         $.ss.stddev()
|     |  |    11.431863365173676
|     |  <com.fun.utils.JsonUtil@192d74fb json=[ss:[32, 32, 4, 23], store:[bicycle:[color:red, price:19.95], book:[[pages:[S, X, G], author:Nigel Rees, price:8.95, page:D, category:reference, title:Sayings of the Century], [pages:[A, B], author:Evelyn Waugh, price:12.99, page:A, category:fiction, title:Sword of Honour], [pages:[E, F], author:Herman Melville, price:8.99, isbn:0-553-21311-3, page:B, category:fiction, title:Moby Dick], [pages:[C, D], author:J. R. R. Tolkien, price:22.99, isbn:0-395-19395-8, page:C, category:fiction, title:The Lord of the Rings]]], expensive:10]>
|     false
11.4318

<Click to see difference>


 at com.FunTester.spock.utils_test.JsonUtilTest.验证处理数组的函数(JsonUtilTest.groovy:120)

JsonPath工具类单元测试

单元测试用例

控制台输出